Vehicle heater



Jan. 13, 1931.

A. C. REFSGAARD VEHICLE HEATER Ptented'Ja-. 13,5,1931 'l einen CARL REsGnARD; or HAMBURQGBMANY' f e VEHICLEfHearn'1s-. v

Applicationkieanecemberfee,1928, serial ir932s,415, a41ia iiieermanyneeembef 4, isos. f

This inventionl relates to an apparatus for heating` :motor-Vehicles running on land, flyjing -in the air and iioating in the water, and

which are drivenlby an internal combustion engine, {the 'exh'austl gases et which vare utilized,'i accordingto the invention; Jlor produc-- ,ing hoteair which is then supplied as heating niediuingto the kcompar@Rents andse'ats4 of U'lhe heating apparatus consists,gaeeording to theiinvention, of-a hollow bodyenelosing Hows inlbeing'heatedfby the .exhaust pipe heated by theexhaust gases, or bythesileneer l respectivelyy and'fthen conducted as hot air seats of ,theyehiele which are to 'be heated.

The hollow body forming '..heating v chamber is tubular,v so that'it can bereadily placed` over or on the exhaust pipe or silencer yandfixed on the same to exertitself a silencinge:lect. Y .n By means of suitable devices this-tubular :heating bodyy can be easily.mounted` subsequently on existing-:Inotor-vehicles so,- that it is not necessary to remove theexhaust elements. ,f rAn embodimentnof the-inyentionis-illustrated, by wayof example, in the accolII- fv yimgk drawings' in which 'Y kFigi 'showsk in 'longitudinal vsection a heating apparatus Y which encloses the'y exhaust pipe and the silencerrespectively, the vxhaust pipe `and silencer ,being shown in elevation.

l Fig. 2 isa similar View yas Fig. l, the heating apparatus beingarranged so that it canV be mounted in an existing 1notor-vehicle.

` Figs. 3 and are cross sections through the air heater. f j Figs. 5 and 6 show in end view and longitudinal section and elevation respeetivelylan the heatingl apparatus shown in n' n f holes 10 niaybe'arrangedin therwall ofthe cylindrical body 2,this body being'eentered element of Fig. 2. v

yon the exhaust pipe and onthelsilencergop 7 shows inyertical section anothery form of 'construction 'ci' ui formingthe 'air heater.

e hollow tbody` l Fig.'` 8k shows diagrammatieallyin side ele-V l 'vation houT the heating apparatus "isfaif- The'hollo vv body2-"or1ning theair-heatingg chamber, l preferably 'made of ,thin i rustfv 'proof sheet '1n-etal' andA .(Qated lon"-the, outer or. inner,surface,with'oninsulating coating `3 ofasbfestos-plates oi' the like`,' designedy tolpre-y Vent :radiation 'of hea t rihe hollowA body 2 i mightfbefinade of east metal. rll'iefhollfowik body 2 is mounted ontheKL exhaust elements of theflengine so that it encloses completely?.r` Y y' or only rvpartly' `the exhaust pipe 4 and the?.

silencer 5. @ne or several openingsfor the i' adinis'SIQIiof fresh airv (eventually means x of supplygpipes) and oneor several'openings The' `disoharge *openings are, preferably,. ai-- rangedon-`tlie highest point of the .hollow Y' body 2'an'dthe pipes or channels leading from'.

feriadischargingnehme@ aa me provided. 'Y Y these."dischargevr openings tothe coinpa-rt- @ments and seatsofthe Vehicle areupwardly inclined', l'in order thatthe heated air-of.l vlighte'r'f specifie,gravityean flow outeasily;

According tothe vquantity ofair required.;

hollow air heating body 2 maybe arranged L on onek of these two elements.

1f the hollow body 2 enclosing the exhaust #pipe` 4 is.V ofconica-l-cylindrieal`shape,`` and vthe hollow body 2 enclosing the silencer-5, v. i isfoi:l uniform cylindrical shape. kThe lend.

6 of this air heating body 2 is open forthe admission of freshA air, the other end being closed byineansof aplate 7 fixed on vthe exhaust'pipeor silencerf respectively. .The

open end of the airheatingbodiesjQ may be f, enlargedfinffunnel shape in order to better Y :i805 In the forni of construction shown inFig.

and secured in position by nieansof wires l1 extending chord-like through the hollow body and passing lthrough the holes l0. These wires ll Yform at the same time a screen against penetrating of foreign bodies. Each heating body'has a discharge hole l2 for the heatedair. .F rom this discharge hole extends eitliei1 a rigid tube 13 or a flexible metal tube la, which projects through the floor of the vehicle into the compartment or seats-to be heated. 1

As shown in F ig. l a separate channel 16 Y formed by a sheet metal casing'li' may be i V n l this object in View the tubular-'body'Qlpwhich vforms the hollow body 2 or the air heating tively;

mounted' on the heating body 2faiid-coin municate with the heating chamber l through the dischargehole Vl2, the hot4 air from this channel 16 flowing throughseih yeral narrow bores lSinto the Vehicle.

n' The admission of hot air into the vehicle canV beV regulated by coversflQ or throttle valves'QO inthe supply pipes 13,14ere'speej Thehollow vbodies 2 lconstructed shown in Fig. 2-are specially adaptedl to be 'sub-V sequently built into existing vehicles. ,Vith

chamberl, is slit in longitudinal direction Ito be placed over the exhaust pipe orl the Y haust pipe 4 or of the silencer 5 by means of ,Y clip or wire 25, soV that with the aidl of the linsulating lining 3v this end y is airtightly ',closed. .45

V`is not suflici-ently'distant from the bottoni `Then the exhaust pipe el or the 'silencer kl5 plate or ioor or too'near a'wall, the air heating body may be constructedas shown in,

'Fie'. 7.

In this case al thick insulating layerQS is vfired on the lower surface of the .bottoni plate or von the corresponding surface' of the wall to protect vthe vsaine against the direct action of theheat All pipes and channels designed to conduct the hot air to the point of consumption have also a heat insulating cover.

A suiiicient supply offreshair to the air heating bodies 2 may be obtained by arranging the open ends of the heating bodiesor the open ends Vof t-he supply pipes in the direction in which the vehicle travels, i. e.- towards the front end ofthe saine. n I f The freshy air iiows` in theY direction of the arrow 29 into the air heating body, it is heated in this body bythe exhaust pipes or by the silencer 5 heated by the exhaust gases Afrom thev engine, and the heated air flows then to the points, where the heating has t0 be carried out. Y

On a flying craft a separate protecting cover or'screen may be provided for the heating apparatus inl oider that the heating process be ynot unfavourably influenced by the high speed. v

I claim: 1^. A'lieating apparatus for the compartrments and seats of motor vehicles driven by n formed by incisions, an insulating lining` in said tube, and a clip for pressing said tongues with Vsaid insulating lining against the eX- haustelements toforin an airtight closing of the end of said tube. f

2. `A heating apparatus for the vcompait.l

ments 'and seatsof kmotor Vehicles driven by internal' combustion engines, comprising in cc'iinbiiiationy a Atube. forming' a ring-shaped :heating chainberadapted to be mounted on theexhaust elements and having'a longitudinal slottoadaptsaidgtube to the desired width, tongues at one end of said slit tube formed by incisions, anY insulating lining in saidfgtub'e, al clipV for pressing said tongues with vsaid insulating lining Vagainst the eX- Vhaustelenient to form anvairtight closing of the end of said tube, and centering spacing and fixing means inthe open end of said tube. Y f

3. A heating apparatus for the compartments and 'seats of motor vehicles driven by internal combustion engines, comprising in combination with the exhaust pipe and the silencer, tubes enclosing each of said exhaust elements and closed at the rear end, and wires threaded chord-like through the open front ends of said tubes for centering said tubes and adapte'dto form a protecting sieve to pre- Y Vent access of foreign bodies into said tubes,

end.

' ln testimony whereof I aflix my signature.

' ANTON CARL `REFSGAARD.

said sieve adapted for any width oi' the tube llO 

